2157454 has 16 divisors (see below), whose sum is σ = 3512880. Its totient is φ = 993720.

The previous prime is 2157451. The next prime is 2157457. The reversal of 2157454 is 4547512.

2157454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2157451) and next prime (2157457).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4149 + ... + 4639.

It is an arithmetic number, because the mean of its divisors is an integer number (219555).

2^2157454 is an apocalyptic number.

2157454 is a deficient number, since it is larger than the sum of its proper divisors (1355426).

2157454 is an equidigital number, since it uses as much as digits as its factorization.

2157454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 506 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 2157454 is about 1468.8274234913. The cubic root of 2157454 is about 129.2152726309.

It can be divided in two parts, 21 and 57454, that added together give a palindrome (57475).

The spelling of 2157454 in words is "two million, one hundred fifty-seven thousand, four hundred fifty-four".